题目内容
生物体的性别决定有多种类型，试确定下列个体的性别： 人类XXY______，XO______； 果蝇AAXXY______，AAXY______，AAAXX______，(其中A代表常染色体组)； 鸡ZW______。
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案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 79（）
案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 84（）
案例分析题In some urban centers, workaholism is so common that people do not consider it unusual. They accept the lifestyle as normal. They frequently spend many (67) hours on the job each week and often do so by choice, not by (68) .Workaholism can be a serious problem. (69) true workaholics would rather work than do anything else, they probably don’t know how to (70) ; that is, they might not (71) movies, sports, or other types of entertainment. (72) of all, they hate to sit and do nothing. This (73) to relaxation may cause health problems such as heart attacks. (74) , typical workaholics don’t pay much attention to their families. They spend (75) time with their children, and their marriages may (76) .Is workaholism always dangerous Perhaps not. Some studies show that many workaholics have great (77) and interest in life. Their work is so (78) that they are actually very happy. For most workaholics, their jobs provide them (79) a challenge; this keeps them busy and creative.Other people (80) from work at age sixty-five, but workaholics usually (81) not to quit. They are still (82) about work and life in their eighties and nineties.Why do workaholics enjoy their jobs so much There are several advantages to work. Surely it offers more than financial (83) It provides people with self confidence. Psychologists claim that work gives people an identity through participation in work, (84) they get a sense of self-satisfaction and (85) Perhaps some people are compulsive about their work, but their (86) seems to be a safe—even an advantageous—one. 81（）
在家鼠中，花毛基因是X连锁遗传，而且对正常毛是显性，如果一正常毛色雌鼠与花毛雄鼠杂交，下述哪句话正确(雌鼠是同配性别)______
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